This volume contains six works of Augustine of Hippo, all dealing with the topic of heresy, along with two works by other authors to which Augustine is replying. Some of the works address the topic generally, such as Heresies, in which Augustine outlines the principal promoters and errors of 83 heresies from the apostolic era through his own lifetime. Others, such as Answer to an Arian Sermon and Answer to an Enemy of the Law and the Prophets, address specific heresies and how they diverge from the truth of Church teaching. The works span his time as bishop of Hippo. Includes: Heresies, Memorandum to Augustine, To Orosius in Refutation of the Priscillianists and Origenists, Arian Sermon, Answer to an Arian Sermon, Debate with Maximinus, Answer to Maximinus, Answer to an Enemy of the Law and the Prophets.